The mammalian intestine contains a large number of commensal bacterial strains. New work suggests that antimicrobial peptides used for defense against pathogenic bacteria are also used to adjust the balance among bacterial populations and to control intestinal homeostasis.
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Menendez, A., Ferreira, R. & Brett Finlay, B. Defensins keep the peace too. Nat Immunol 11, 49–50 (2010). https://doi.org/10.1038/ni0110-49
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DOI: https://doi.org/10.1038/ni0110-49
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